1. 前言mysql
遇到線上大sql執行較慢, 10s+, 作優化改進時,首先想到的是在本地造出一個相似的庫環境,先本地實驗。sql
而後往表中建立大量數據...函數
2. 方案測試
利用mysql函數來插入大量數據優化
代碼spa
BEGIN #Routine body goes here... DECLARE id int; DECLARE driverid int; DECLARE baseid int; set id=LAST_INSERT_ID()+1; WHILE id<1700000 DO set driverid=RAND()*67890; set baseid=RAND()*1000; INSERT INTO `xxl`.`car_xx` (`id`, `driver_id`, `driver_phone`, `driver_name`, `order_no`, `created_time`, `car_group`, `service_type`, `numprize_base_id`, `order_amount`, `updated_time`, `order_praise`, `order_doubt`, `order_risk`) VALUES (id, driverid, '15801050217', '孔師傅', CONCAT('P00000000',id), '2017-10-28 20:21:54', '34', '1', baseid, '11.00', '2017-10-28 20:21:54', '1', '0', '0'); SET id=id+1; END WHILE; RETURN id; END
執行遇到3d
而後作了清空測試表的操做。code
再執行,系統負載以下blog
結果ci
再看錶 ,170萬數據入庫了
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2018 12 03 更新
再次用這個 函數 Navicat 運行按鈕 置灰 操做不了 ...
2. 存儲過程
DROP PROCEDURE IF EXISTS proc_initData; DELIMITER $ CREATE PROCEDURE proc_initData() BEGIN DECLARE id INT ; set id=LAST_INSERT_ID()+1; WHILE id<=50000 DO INSERT INTO `xx`.`x_x` (`id`,`keyword`,`red_pkg_id`,`city_ids`,`start_time`,`end_time`) VALUES (id,CONCAT('P0000abcd',id),2,'44,74','2018-11-03 00:00:00','2018-11-03 23:59:00'); SET id = id+1; END WHILE; END $ CALL proc_initData();